Cultivation: Grow in moist, fertile, humus-rich soil. Takes full sun to partial shade; appreciates more shade in southern part of its range. In prime growing conditions—e.g., consistently moist, loose soil—Japanese anenomes can be aggressive and overtake nearby less vigorous plants. New plants can be removed easily, owing to their shallow, fiborous roots, but their growth can be rapid. To slow unwanted spread, dig up and divide the plant every 2 or 3 years, discarding unwanted portions. USDA Zones 4–8.

Loved my Japanese anenome for the first two years, now I’ve been trying to get rid of it for five years. Tiny bits of roots left behind seem to be enough for another plant to pop up, usually inside a clump of something I want just were it is. Think twice before planting it and consider corralling it with an above and below ground barrier surrounding the rootball.